• 대한두경부종양학회지
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• 제14권1호
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• pp.81-87
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• 1998

Fine needle aspiration cytology was used widely to select thyroid nodules for surgery. The result could be highly reliable for most malignancies and for benign nodules. The purpose of this study was to determine the value of frozen biopsy by directly comparing the results of preoperative fine needle aspiration cytology to frozen biopsy examination. In our university hospital, 103 patients with thyroid nodule were operated during the years 1996 through 1997. A comparison of accuracy of the fine needle aspiration cytology with frozen biopsy was made for 85 patients who underwent both procedures. The 85 patients were separated into two groups. The group I included 65 patients, whose preoperative fine needle aspiration cytology results were reported as benign or malignant lesion definitely. The group II included 85 patients, the patients whose reported fine needle aspiration cytologic result was suspicious for malignancy were regarded .as malignant lesion and results for follicular neoplasm were regarded as benign lesion. The accuracy of both procedures was compared on two group also. The sensitivity, specificity, and accuracy of frozen biopsy were 76.7%, 93.5%, and 85.2% in group I and 75.6%, 95.5%, and 85.9% in group II, respectively, compared with 63.3%, 87.1%, and 75.4% in group I and 65.4%, 81.8%, and 72.9% in group II for fine needle aspiration cytology. On benign lesion, the accuracy was 95.5% in frozen biopsy and 68.2% in fine needle aspiration cytology, 75.6% in frozen biopsy and 53.7% in fine needle aspiration cytology on malignant lesion. We conclude that although fine needle aspiration cytology is the reliable diagnostic test in the evaluation of thyroid nodule, frozen biopsy should be performed intraoperatively, because fine needle aspiration cytology is insufficiently sensitive for reliable surgical planning.

• 대한두경부종양학회지
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• 제19권1호
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• pp.52-57
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• 2003

Background and Objectives: Fine needle aspiration (FNA) cytology is a simple, safe and relatively accurate procedure of diagnosing thyroid nodules. Although the frozen section biopsy is well known as more reliable method than FNA and has high specificity, whether it is necessary it leaves room for adverse criticism. Authors have compared preoperative FNA cytology and frozen section biopsy with permanent histologic findings and evaluated the significance of FNA cytology and frozen section biopsy. Materials and Methods: The medical records of 110 patiens who underwent FNA cytology and frozen section during thyroidectomy from September. 1997 to December. 2001 at the Department of Otolaryngology, School of Medicine, Keimyung University were analyzed retrospectively. Results: Sensitivity, specificity, accuracy of FNA was 75%, 91.4%, and 85.5% respcetively. Sensitivity, specificity and accuracy rate of frozen section biopsy were 92.5%, 100% and 97.3% respectively. Conclusion: FNA is simple, with rare complication and its diagnostic accuracy is comparatively so high that it is being used as primary test to diagnosis thyroid nodules. But frozen section is more accurate and may be helpful to suspicious FNA findings or if it beyond capacity of FNA. Therefore despite of the fact that the intra-operative frozen is more expensive and time consuming, it is very helpful to the treatment of thyroid nodules by using jointly with FNA.

• 대한두경부종양학회지
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• 제16권1호
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• pp.52-57
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• 2000

Purpose: The purpose of the study was to evaluate the sensitivity, specificity and accuracy between the FNAC and intraopevative frozen biopsy based upon the Final histologic diagnosis. Method: Authors studied 232 cases of thyroid nodule operated at Department of Surgery, College of Medicine, Chosun University, from January 1992 to December 1998. The medical records of these patients were studied retrospectively. The cytology of FNAC and the frozen section was compared to the final histologic diagnosis. 232 cases were analysed in regard to correlation of FNAC diagnosis and Intraoperative frozen section with final pathology, preoperative thyroid scan, thyroid function test, ultrasonography, final histopathology of the specimens, and surgical operation methods. 174 cases who underwent FNAC for diagnosis before operation, and Intraoperative frozen-section biopsy were classified according to whether the clinical diagnosis was benign, suspicious or malignant and evaluated the specificity sensitivity and accuracy. Result: Comparing with final histopathology, FNAC as a diagnostic test for thyroid nodules demonstrated an accuracy of 81.3%, a sensitivity of 87.5%, a specificity 86.5% with a false positivity of 2.9%, false negativity of 4.3%, respectively. and Intra-operative frozen section demonstrated an accuracy of 86.8%, a sensitivity of 87.5%, a specificity 92.1%. In the benign lesion, there was no difference in accuracy between FNAC(95.6%) and frozen section(95.1%) but, in the suspicious malignant lesion, frozen section(46.2%) was superior to FNAC(32.0%), and in the malignant disease, FNAC(97.1%) was superior to frozen section(92.3%). Conclusion: Intraoperative frozen section biopsy is useful in patients undergoing surgery for a thyroid nodule with a 'suspicious' malignant lesion and could reduce inadequate extensive excision without missing malignancy and second operation and help to determine the resection margin. It adds no information in patients with a diagnosis of malignancy following FNAC assessment and is of limited use in those in whom a benign lesion is diagnosed.

• Journal of Gastric Cancer
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• 제11권3호
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• pp.155-161
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• 2011

Purpose: To determine the diagnostic utility of a frozen section biopsy in patients undergoing endoscopic submucosal dissection (ESD) for early gastric neoplasms with obscure margins even with chromoendoscopy using acetic acid and indigo carmine (AI chromoendoscopy). Materials and Methods: The lateral spread of early gastric neoplasms was unclear even following AI chromoendoscopy in 38 patients who underwent ESD between June 2007 and May 2011. Frozen section biopsies were obtained by agreement of the degree of lateral spread between two endoscopists. Thus, frozen section biopsies were obtained from 23 patients (FBx group) and not in the other 15 patients (AI group). Results: No significant differences were observed for size, histology, invasive depth, and location of lesions between the AI and FBx groups. No false positive or false negative results were observed in the frozen section diagnoses. Adenocarcinoma was revealed in three patients and tubular adenoma in one, thereby changing the delineation of lesion extent and achieving free lateral margins. The rates of free lateral resection margins and curative resection were significantly higher in the FBx group than those in the AI group. Conclusions: Frozen section biopsy can help endoscopists perform more safe and accurate ESD in patients with early gastric neoplasm.

• 한국수정란이식학회지
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• 제15권3호
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• pp.219-230
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• 2000

This study was carried out to determine the factors on achieving good viability of embryos biopsied fur sexing, to investigate pregnancy rate following embryo transfer(ET) with sexed embryos, and to confirm the accuracy for the calves bort following ET with sexed embryos by polymerase chain reaction(PCR). To investigate viability of Hanwoo embryos after biopsy for sexing, fresh and frozen/thawed embryos were biopsied according to different developmental day of blastocysts, different stage of blastocysts, and different biopsy grade and the embryos themselves were incubated for 2 hours in TCM199 after microsection to be evaluated morphologically for recovery as blastocyst. The results obtained were as follows : 1. The rate of oocytes cleaved in vitro and the rate of blastocyst of the cleaved oocytes were 52.5% and 21.6%, respectively. The rate of blastocyst on day 8 was 11.2%, denoting the highest rate during whole culture period posterior to in vitro fertilization(IVF) 2. After biopsy for sexing, the viability rate of blastocyst on day 7, 8 and 9 was 75.0%, 88.4%, and 100.0%, respectively and the viability of early, mid, and expanded blastocyst after biopsy was 75.0%, 88.9%, and 91.1%, respectively The viability rate of fresh and frozen/thawed embryos was 89.9%, 71.4%, respectively. And the viability of expanded, hatching, and hatched blastocyst of frozen/thawed embryos was : 75.0%, 75.0%, and 50.0%, respectively. The viability of embryos according to biopsy grade of 10∼20%, 21∼30%, and 31∼40% was 85.7%, 91.5%, and 71.4%, respectively. 3. Pregnancy rate after transfer with biopsied embryo between flesh and frozen/thawed embryos was 22.6% and 20.0%, respectively. 4. In comparison between sex by PCR method and sex of calves born after embryo transfer, the accuracy of sex deterimination was 92.3% (12/13).

• Archives of Plastic Surgery
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• 제41권6호
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• pp.753-758
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• 2014

Background Extramammary Paget's disease (EMPD) is an intraepithelial carcinoma usually occurring on the skin or mucosa of the perineum. Clinically, it resembles eczema or dermatitis, and misdiagnosis and treatment delays are common. The treatment of choice for EMPD is a wide excision with adequate margins. Wide excision with intraoperative frozen biopsy and Mohs micrographic surgery are common methods; however, these are associated with a high recurrence rate and long operation time, respectively. Methods Between January 2010 and June 2013, 21 patients diagnosed with EMPD underwent mapping biopsy. Biopsy specimens were collected from at least 10 areas, 2 cm from the tumor margin. When the specimens were positive for malignancy, additional mapping biopsy was performed around the biopsy site of the positive result, and continued until no cancer cells were found. Based on the results, excision margins and reconstruction plans were established preoperatively. Results The patients (18 male, 3 female) had a mean age of 66.5 years (range, 50-82 years). Almost all cases involved in the perineal area, except one case of axillary involvement. Permanent biopsy revealed one case (4.8%) of positive cancer cells on the resection margin, in which additional mapping biopsy and re-operation was performed. At the latest follow-up (mean, 27.4 months; range, 12-53 months), recurrence had not occurred. Conclusions Preoperative mapping biopsy enables accurate resection margins and a preoperative reconstructing plan. Additionally, it reduces the operation time and risk of recurrence. Accordingly, it represents an effective alternative to Mohs micrographic surgery and wide excision with intraoperative frozen biopsy.

• Advances in pediatric surgery
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• 제10권1호
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• pp.60-62
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• 2004

Leveling colostomy with a frozen-section biopsy in a Hirschsprung's disease is an important factor for a successful procedure. Two neonatal cases of Hirschsprung's disease in the descending colon are reported. In both cases, loop ileostomy was established because of the unavailability of frozen-section biopsy on an emergency basis. At the time of definitive procedure of the first case, transition zone at the splenic flexure was noted and was compatible with the frozen section biopsy. In the second case, an unexpected longer resection at a higher level than transition zone was required because of the poor vascularity after dissection. In conclusion, a leveling colostomy should be selected as a choice in long-segment Hirschsprung's disease. Confirming preservation of the marginal artery of Drummond is particularly important in case of Hirschsprung's disease in the descending colon.

• 대한두개안면성형외과학회지
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• 제24권4호
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• pp.185-188
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• 2023

Rhabdomyosarcoma is the most common soft tissue sarcoma in children, accounting for 4.5% of all cases of cancer in childhood. Although the head and neck are the most common sites of rhabdomyosarcoma, oral lesions are relatively rare and account for only 10% to 12% of head and neck rhabdomyosarcoma cases. This is a case report of a girl aged 2 years and 1 month who initially presented with an upper lip mass that invaded the oral mucosa, oral skin, and nostril skin, causing narrowing of the airway. Through our case, we show that rapidly growing small round cell malignancies, especially rhabdomyosarcoma, can be effectively diagnosed and treated at the same time using primary resection with intraoperative frozen section biopsy and that the time spent waiting for the results of preoperative biopsy can be saved in this way, particularly when the patient's symptoms are intensifying rapidly and require immediate operation.

• Archives of Plastic Surgery
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• 제50권4호
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• pp.377-383
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• 2023

Background Squamous cell carcinoma (SCC) is the most common malignancy on the lower lip. Surgical excision, the standard treatment for SCC, requires full-thickness excision. However, no consensus exists about the appropriate surgical margin. Therefore, we investigated the appropriate surgical margin and excision technique by analyzing 23 years of surgical experience with lower-lip SCC. Methods We reviewed 44 patients with lower-lip SCC who underwent surgery from November 1997 to October 2020. Frozen biopsy was performed with an appropriate margin on the left and right sides of the lesion, and the margin below the lesion was the skin above the sulcus boundary. If the frozen biopsy result was positive, an additional session was performed to secure a negative margin. Full-thickness excision was performed until the final negative margin. In each patient, the total number of sessions performed, final surgical margin, and recurrence were analyzed. Results Forty-one cases ended in the first session, 2 ended in the second session, and 1 ended in the third session. The final surgical margins (left and right; n = 88) were 5 mm (66%), 7 mm (9%), 8 mm (2.3%), 10 mm (20.4%), and 15 mm (2.3%). During an average follow-up of 67.4 months (range, 12-227 months), recurrence occurred in one patient. Conclusion The final surgical margin was 5 mm in 66% (58/88) of the cases, and 97.7% (86/88) were within 10 mm. Therefore, we set the first frozen biopsy margin to 5 mm, and we suggest that a 5-mm additional excision is appropriate when frozen biopsy results are positive.

• 대한두경부종양학회지
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• 제18권2호
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• pp.168-172
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• 2002

Objectives: This study was done to determine the diagnostic efficacy of fine needle aspiration cytology (FNA), frozen section biopsy (FSx) and ultrasonography in a palpable thyroid mass. Materials and Methods: During the period from July 1999 to March 2002, the medical records of 98 patients who underwent a thyroidectomy for thyroid mass, at the Department of Surgery, Chonbuk National University Hospital, were reviewed retrospectively. Ninety eight cases were classified according to whether the FNA cytological diagnosis inadequate, benign, suspicious, or malignant and the FSx diagnosis benign or malignant and the ultrasonographic examination was benign, suspicious, or malignant. The diagnostic correlations of ultrasonography, FNA cytology, frozen section, and both FNA cytology and frozen section with definite histologic diagnosis were evaluated. Results: According to the FNA cytological interpretation, 76 cases were diagnosed as benign, 6 cases suspicious, 13 cases malignant, and 3 cases inadequate. The sensitivity and specificity for FNA were 86.3% and 95.9% and for FSx 95.5% and 100% respectively. The diagnostic accuracy of FNA and FSx were 93.5% and 98.9% respectively. Based on a definite histologic diagnosis, the ultrasonographic examination had a sensitivity and a specificity of 77.2% and 78.9%. Conclusion: The results confirm that FNA cytology is a reliable and useful tool in the initial evaluation of a palpable thyroid mass compared to the ultrasonographic examination. Intraoperative FSx is a valuable diagnostic procedure to confirm the cytological diagnosis with undetermined or unsatisfactory cytological diagnosis.